The Omron G3PE-245B-3N is a 3-phase solid state relay purpose-built for heater control — not a general-purpose contactor or a motor starter. Its 45 A load current at 40 °C and 15.5 kW load carrying capacity at 200 VAC tell you it is sized for moderate industrial heating loads: ovens, furnaces, injection-molding barrel heaters, or packaging seal bars. The zero-cross switching turns the load on at the voltage zero crossing, which minimises inrush and electrical noise — critical when the same panel houses PLCs or temperature controllers. The input side accepts a 12 to 24 VDC control signal, with an operating range of 9.6 to 30 VDC, so it works with standard 24 VDC PLC outputs or temperature-controller logic. The 10 mA max input current at 24 VDC means a single PLC digital output can drive it without an interposing relay. Release voltage is 1 VDC min, ensuring a clean off-state even with a slow-decaying supply.
The 440 A inrush current resistivity for 1 cycle at 60 Hz and the permissible I²t of 1260 A²s indicate this SSR can handle cold-filament surges. Minimum load current is 0.5 A. Load voltage range is 75 to 264 VAC, covering 100-240 VAC nominal — single-phase or three-phase line-to-line within that band. The phototriac isolation separates the control and power circuits galvanically, which is standard for safety in heater panels.